Multiplex communications – Data flow congestion prevention or control
Reexamination Certificate
2004-04-09
2008-03-25
Tieu, Benny Q. (Department: 4177)
Multiplex communications
Data flow congestion prevention or control
C370S229000, C370S428000, C370S381000, C370S235000
Reexamination Certificate
active
07349334
ABSTRACT:
Method, system and program product are provided for packet flow control for a switching node of a data transfer network. The method includes actively managing space allocations in a central queue of a switching node allotted to the ports of the switching node based on the amount of unused space currently available in the central queue and an amount of currently-vacant storage space in a storage device of a port. In a further aspect, the method includes separately tracking unallocated space and vacated allocated space, which had been used to buffer packets received by the ports but were vacated since a previous management update due to a packet being removed from the central queue. Each port is offered vacated space that is currently allocated to that port and a quantity of the currently unallocated space in the central queue to distribute to one or more virtual lanes of the port.
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Heslin Rothenberg Farley & & Mesiti P.C.
International Business Machines - Corporation
Kangarloo Ramtin
Radigan, Esq. Kevin P.
Tieu Benny Q.
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